Ceramic patch pipe for power plant

The ceramic patch pipes for power plants are severely eroded and worn by the air-powder mixture and are subject to high pressure, especially on the elbows. Because the airflow changes the flow direction on the curved side, the outer side of the elbows is seriously worn.

The ceramic patch pipes for power plants are composed of three layers of steel parts, viscose, and ceramics. The steel parts are formed by 20# integral hot bending, and the ceramics are bonded to the inner wall of the steel parts by inorganic adhesive. It is installed with a staggered seam and arched joint and is cured by heating to form a firm anti-wear layer.

Ceramic patch pipes for power plants are suitable for pneumatic powder transportation, and their service life is more than 4-5 times that of ordinary wear-resistant pipes. It is widely used in pipeline systems such as pulverized coal, ash transportation, and desulfurization of power systems.

Ceramic technical parameters

Al2O3≥95%≥ 99%
Rock Hardness HRA≥85≥90
Bending Strength MPa≥330≥340
Compression strength MPa≥1200≥1300
Fracture Toughness KIc MPam 1/2≥4.0≥4.2
Volume wear≤0.02cm3≤0.01cm3

The composition of the pipeline structure

CompositionThicknessMaterialProcess characteristics
steel6-8mm20# seamless pipeSeamless molding, high strength, can withstand high pressure
viscose0.5-1mmHigh temperature resistant inorganic compoundsLong-term operation at 350°C without aging, good thermal expansion, and strong adhesion
ceramics5mm95%High density, super wear resistance, good toughness